X Factor USA judge Nicole Scherzinger has said that she is lucky to be working with Josh Krajcik because he is a "real, true musician".

The pair spoke about their working relationship during a Q&A session with fans on U-Stream on Tuesday, after one person quizzed Scherzinger on her mentoring style and whether it would change now that Krajcik is her last act in the competition.

Scherzinger replied: "You can always grow and get better... I am making sure there is no stone left unturned, I want to make sure I'm dotting all the Is and crossing all the Ts.

"I want to do right by this man and give service to him and help him be the best he can possibly be because I really believe in him."

The 'Don't Hold Your Breath' singer went on to say that she is "fortunate" to be working with Krajcik on The X Factor because of his musical skills and background.

"He's such a real, true musician so I get to trust him when he doesn't like something musically he can just go and do it," she said.

"As long as he is happy and he feels it is in his veins, I'm cool with it. I'm very fortunate to have that with him. I don't know if the other contestants are as well-rounded musicians and real artists like him."

Krajcik added: "We have a lot of trust in each other and we work well together having worked together for so long. It's a process and we grow together in this process because we want to win."

The singer, who performed 'Wild Horses' by The Rolling Stones on last week's Thanksgiving show, is the last-remaining act in Scherzinger's Over 30s category following the elimination of LeRoy Bell on last week's live result show.